We took our vent off the dryer because we thought/were told that in the winter it would keep the house warmer and in Minnesota we can have some wicked winters. Then I found out that if you have a gas dryer, which we do, we could so easily asphyxiate ourselves by not having it hooked up to the outside which for the past 42 years we have had it vented. And we are still here!!!!! The vents on or for dryers are there for a purpose, and if it isn't, get one and make sure you are vented to the outside! WE have had our dryer since 1972. And it still works - must be the vent and hose from the dryer to the window to outside. Good luck to you. Edie